For the MC, though, I'd suggest a shorter hood and longer passenger compartment, to distance it from the Camaro. Front looks great though; you've kept the Chevy theme strong.
I wish I had drawing talent that went farther than playing "hangman". I toyed with an idea on how to recapture the fender swoops of the old MC's without looking 1970s. I couldn't even describe it properly, no less express it on paper!
The Monte Carlo was introduced by Chevrolet to rival with tHe already successful executive's Grand Prix. Like the Grand Prix, the Monte Carlo had a fairly long hood-line. But the Grand Prix had the longest hood-line of any GM product in 1969. KEEP THE LONG HOOD! it's breathtaking!